Bailboad-rail



C. A. WITTER.

RAILROAD RAIL.

APPLICATION mso MAY 22. 1920.

1,348,67 v Patented Aug. 3,1920.

CLAUDE A. WITTER, 0F PHILADELPHIA, PENNSYLVANIA.

RAILROAD-RAIL.

I Specification of Letters Patent.

Patented Aug. 3, 1920.

Application filed May 22, 1920. Serial No. 383,405.

To all whom it may concern:

Be it known that I, CLAUDE A. WVI'rTEn, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Railroad-Rails, of which the following is a specification.

My invention relates to certain improvements in the manufacture of railroad rails.

One object of my invention is to improve the construction of steel rails by manufacturing them from ingots which have been punched to form a ring and in which the ring has been straightened so as to increase the density of the metal forming the head of the rail.

A further object of the invention is to produce a rail free from imperfections due to iping and segregations.

n the accompanying drawings:

Figure 1 is a sectional perspective View of a rail, illustrating my invention; and Figs. 2 to 7, inclusive, are views illustrating the process of manufacturing a rail.

1 is an ingot in which the piping and segregations are shown at 2. This piping extends more or less into the center of the ingot and is one of the main causes of imperfections in railroad rails where an entire cross section of an ingot is used to produce the rail.

By my invention, I remove the central portion of the ingot by punching, first reducing the ingot in the form of a bloom, as

bending test. T he blank is then .L the in Fig. 3. The center portion 3 of the bloom is then removed, leaving a ring 4 with a central opening 5. This ring is then increased in diameter by any of the well known processes and is then cut, as illustrated in Fig. 5. The ring is then straightened, as in Fig. 6. This straightening process compresses the portion a of the blank, Fig. 6, which forms the outer surface of the ring, and it subjects the entire cross section to a preliminary hot reduced by rolling to form the rail illustrated in Fig. 7 and the head I) of the rail is formed from compressed portion of the blank. The metal of the head of the rail Z), indicated in Fig. 1, is of greater density than the metal at the flanges 0. The greatest density is at the tread of the rail where the wear occurs.

I claim:

1. As an article of manufacture, a railroad rail made of wrought and rolled metal, in which the metal decreases in density from the head of the rail to the flanges thereof.

2. As an article of manufacture, a railroad rail made of an ingot from which the piping and segregations have been removed, and which has been reduced by pressing and rolling to form a blank from which the rail is made, the metal at the head of the rail being of greater density than that of the flanges, due to compression involved in the straightening process.

CLAUDE A. WITTER. 

